I have problems selecting feeder using gdtwain, so i try to set flatbed and scan. If there are documents in ADF, it scans from ADF anyway, if not, the following accur:
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Warning message from HP scansoftware (i translate):
and then warning msg from GDTWAIN:'Original documents are removed form ADF. Please place the documents and press New Scan. If you want to scan from Flatbed, there must be no documents in the ADF. Close HP-scansoftware and start the program again.'
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my set-scanner-settings log, just before scan:
TwainHasFeeder returns 'false'
TwainSelectFeeder(xxx) returns 'false'
TwainSetAutoFeed(True) returns 'false'
TwainSetAutoFeed(False) returns 'true'
TwainIsFeederSelected retruns 'true'!!!
Debug Mode ON:
> GdTwain Debug Start. Version 410
> Start: OpenSource; RC: TWRC_SUCCESS; CC: TWCC_SUCCESS; State 3
> Start: SetXferMech.; RC: TWRC_SUCCESS; CC: TWCC_SUCCESS; State 4
> End: SetXferMech.; RC: TWRC_SUCCESS; CC: TWCC_SUCCESS; State 4
> End: OpenSource.; RC: TWRC_SUCCESS; CC: TWCC_SUCCESS; State 4
> Start: SetAutoFeed.; RC: TWRC_SUCCESS; CC: TWCC_SUCCESS; State 4
> CAP_FEEDERENABLED. Result for Set True.; RC: TWRC_FAILURE; CC: TWCC_SUCCESS; State 4
> CAP_AUTOFEED. Result for Set True.; RC: TWRC_FAILURE; CC: TWCC_CAPBADOPERATION (Operation not supported by cap); State 4
> End: SetAutoFeed.; RC: TWRC_SUCCESS; CC: TWCC_SUCCESS; State 4
> Start: AcquireNative.; RC: TWRC_SUCCESS; CC: TWCC_SUCCESS; State 4
> Start: WaitForNativeXfer.; RC: TWRC_SUCCESS; CC: TWCC_SUCCESS; State 4
> Start: SetXferMech.; RC: TWRC_SUCCESS; CC: TWCC_SUCCESS; State 4
> End: SetXferMech.; RC: TWRC_SUCCESS; CC: TWCC_SUCCESS; State 4
> Start: WaitForXfer.; RC: TWRC_SUCCESS; CC: TWCC_SUCCESS; State 4
> ... a few more messages with success, no scan actions ..
The warning with v411 beta is the same.
The GdTwain 411 beta one time scan debug log can be found here: [URL OUTDATED]
p.s. Sometimes i get from imaging component that black-and-white scan is not available, sometimes it is. Is it a driver issue?
delphi7; win2000SP4; HP Scanjet 5590 scanner (latest driver, i think).
I hope this was helpfully. If you need more specific info, please tell me.
Regards,
Slava